Refrigerator



Jan. 31, 1928. 1,657,742

J. O. CARREY REFRIGERATOR Filed Dec. 31. 1924 2 Sheets-Sheet l f a. v a. M M Wu ,0 M a W w H R m //w/ A Fy W .1. ll J 0 0 v w Y u 0 2, y 4. d J V Z M V J Jan. 31, 1928. 1,657,742

J. o. CARREY REFRIGERATOR Filed Dec. 51. 1924 2 Sheets-Shet 2 Ewe/d0)" c/oizzz 0. Gar/6y Patented Jan. 31, 1928.

UNITED STATES PATENT OFFICE.

JOHN O. CAB-REY, OF ST. LOUIS, MISSOURI, ASSIGNOR TO CARREY-HOBSE ENGINEER- ING- COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION 01' 1188011311.-

REFRIGERATOR.

Application filed December 81, 1924. Serial No. 759,088.

This invention relates to new and useful improvements in refrigerators of the type employing compressible refrlgerant fluid for cooling the refrigerator. p

s The objects of the inventlon are to mount the condensing coil of the refrigerating apparatus adjacent to the rear wall of the refrigerator and to provide a reservo r arranged below the condenser and preferably 10 under the bottom of the refrigerator and connected to the lower end of the condenser, said reservoir bein connected to the cooling or expansion coil othe refrigerator whereby .a uniform flow of refrigerant to the expan- 15 sion coil is thus assured. p

Still further objects of the 1nvent1on are to arrange the coils of the condenser in a vertical plane between and spaced from two walls whereby circulation of air is lnduced through said space and assists in cool ng the refrigerant fluid flowing through said condenser coils.

With these and other objects in view, my in ention consists in certain novel features 25' of construction and arrangement of parts, hereinafter Y more fully described and claimed, and illustrated in the accompanying drawings, in which" Figure 1 is a rear elevational view of the so refrigerator with the auxiliary rear wall thereof partly broken away.

Figure 2 1s a fragmental vertical cross section taken on lines 2-2 of Figure 1.

Figure 3 is a longitudinal cross section 35 talien through the reservoir member.

tion taken on lines 4-4 of Figure 3.

Figure 5 is a horizontal cross section taken on lines 5-6 'of Figure 2.

Figure 6 is a vertical cross section taken on lines 6-6 of Figure 5. Figure 7 is an enlarged cross section taken longitudinally through one end of the reservolr.

5 Figure 8 is an enlarged cross section taken longitudinally through the other end of said reservoir.

Figure 9 is a fra ental horizontal cross section of a modifi form of refrigerator. so Figure 10 is a fragmental horizontal cross section of another modified form.

Referring by numerals to the accompanying drawings, 10 indicates a refrigerator which is equipped with a cooling tank 11 I containing an expansion coil 12. A compressor is connected to the up r end of a gure 4 1s a transverse vertical cross secpressor 14 is preferably located on top of the refrigerator and has.its intake port connected to the discharge end of the cooling coil 12 while the outletport of said comcondenser 15. The coils of con enser 15 are arranged in a vertical plane and are disposed adjacent tothe rear wall 10 of refrigerator 10. The condenser coils are seated in coinciding notches or seats formed in cooperating bars or cleats 16 and 17 which are arranged in pairs and are clamped to ther by suitable fastening means 18 and maintain said coils in position. BarsY16 are secured to the rear wall 10 by screws or other fas- I0 tening means 19 and space said coils from said wall. A pad 20, of rubber or fiber or similar material, is interposed between the rear wall 10 and each bar 16 and insulates" the coils and eliminates vibration thereof. 7|

Bars 17 overlie bars 16 and are provided with pads 17 which provide a surface hearing for a sheet or auxiliary wall 21 which is spaced from wall 10' and condenser 15 and has its side ed es 22 bent laterally to bear against the we 1 10. These edges are secured in position by screws 24.

Thus the condenser 15 is arranged in a space formed by wall 10 and wall member 21 and is spaced therefrom by bars 16 and 17 so that currents of air can pass 11 wardly and around the condenser coils. e circulation of air through this space, which is open both at the top and bottom, increases the condensing qualities of the condenser.

The lower end of the condenser is con-' nected to a cap 25 which is screwed on one end of a tubular member or reservoir 26, the opposite end of which is closed b a cap 27 having a valve fitting 28 connected by .a ipo '6 connection 29 to the inlet end of the coo or expansion coil 12.

A strainer 30 is fixed to cap 25 b means of a ring 31 which engages the annular ed of the strainer and is secured to the cap y rivets 32. The refrigerant fluid delivered to the reservoir by the condenser passes through said. strainer which catches and retains any foreign material and prevents it from circulating through the system. Tubular member 26 is preferably disposed under the bottom wall 10 of the refrigerator and is supported in position by straps 34 which are fixed to wall 10". Member 26 is of suitable dimensions to hold a supply of refrigerant n.

so that the cooling or expansion coil is at all times assured of a uniform and steady supply thereof.

A discharge valve 14 is interposed between compressor 14 and condenser 15 and controls the communication therebetween so that said condenser may be disconnected from the compressor by shutting said valve and can also be disconnected from the expansion coil by shutting the valve located in valve fitting 28.

In the modified form shown in Figure 9, the side walls of refrigerator 10 are extended rearwardly past the rear wall 10 as indicated at 10 and form a vertically disposed recess or chamber open at the top and bottom and adapted toreceive the condenser coil 15. This recess is closed by an auxiliary rear-wall 35 which rests against the edges of extensions 10.

Inthe form shown in Figure 10. a boxshaped structure 36, open at top and bottom and containing condenser coil 15, is fitted against the rear wall 10 of refrigerator 10.

I claim:

The combination of a refrigerator having its rear wall provided with a vertically disposed chamber open at top and bottom to the atmosphere, a compressor arranged on top of said refrigerator, an expansion coil arranged within and supported by said refrigerator, a condenser coil arranged in said chamber and having horizontally dis osed convolutions arranged in superposed re ation in a vertical plane, said condenser being coextensive with said chamber, one end of said condenser being connected to the high pressure side of said compressor, said condenser being spaced from the walls of said chamber whereby air is induced to circulate freely around said condenser coils and throug said chamber by the thermal conditions prevailing in said chamber, and a refrigerant reservoir secured to said refrigerator below said condenser and connected to the lower end thereof and having its opposite end adapted to be connected to the expansion coil of the refrigerator.

In testimony whereof I hereunto aflix my signature this 16th day of December, 1924.

JOHN O. GARREY 

